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Finding the Fourth Proportional to 7,927.76, 10,940.31 and 4,390.99

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Solution

The fourth proportional to 7,927.76, 10,940.31 and 4,390.99 is: 6,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,927.76 : 10,940.31 = 4,390.99 : x
  2. Step 2: Convert to fraction form
    7,927.76/10,940.31 = 4,390.99/x
  3. Step 3: Cross multiply
    7,927.76x = 10,940.31 × 4,390.99
  4. Step 4: Simplify right side
    7,927.76x = 48,038,764.46
  5. Step 5: Solve for x
    x = 48,038,764.46/7,927.76
  6. Step 6: Final answer
    x = 6,059.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.